DTFA03-03-P-10486

1. 2005 FAA National Software Conference July 26-28 – Norfolk, Virginia Component IntegrationOn Going Research DTFA03-03-P-10486 Jim Krodel, Pratt Whitney East Hartford, CT, USA Sponsoring Org: FAA AIR120/Technical Standards Branch

2. Outline • Background of This Research • Study Considerations • System Safety Considerations • Relationship to SC200 • Research Paper Review • Handbook Review • Next Phase of Research • Discussion

3. Background • Multi-phased COTS Study Program • Phase 1 & 2 • COTS HW Report (DOT/FAA/AR-01/41 ) • COTS SW Report (DOT/FAA/AR-01/26 ) • COTS snapshot (nuclear, medical, elev.), Alt methods • Emerging COTS – RTOSs & Communications • Phase 3 • COTS RTOSs (DOT/FAA/AR-02/118 ) • Phase 4 • COTS RTOSs and architectural considerations • (DOT/FAA/AR-03/77 ) http://www.faa.gov/certification/aircraft/av-info/software/Software%20Research.htm

4. Background (Cont.) • Component Integration Study Phases • Year 1 • Report: “Real Time Operating Systems and Component Integration Considerations for Integration Modular Avionics” – 7/26/04 • Year 2 • Handbook: Integration Considerations in IMA systems – Draft 9/26/05 • Year 3 • Report: Verification Considerations in IMA systems – Draft 7/26/06 Study contributions by George Romanski of Verocel, Inc.

5. Component Integration Study • Attributes • Relate to DO-178 and/or DO-278 • Relate to On-going SC200 Drafts • Relate to Current System Safety Disciplines • Surveys • Literature, Vendors, Applications, Tools, Methods

6. System Safety Considerations for IMA Systems ARP 4754 Federated Look ARP 4754 discusses the steps to develop a system with a proper system safety basis. This document was developed from a federated system mind-set.

7. IMA Safety Considerations

8. ARP4754 – IMA Mapping

9. Application Developer SC200 Development Activities Aircraft Integrator Integration Activity #1 IA #2 IA #3 IA #4 RTOS Developer Platform Dev. O/S APP APP APP APP APP APP APP O/S O/S O/S O/S HW HW HW HW HW IA #4 (System Of Systems) I M A System Integrator APP APP APP APP APP APP APP APP O/S O/S O/S O/S HW HW HW HW

10. SC200 Planning Data Schema Credits Commitments EQP – Environment Qual Plan

11. Forms of Commitments Partition Health Management Health Monitoring Responses to Errors at the Partition Level

12. Research Paper – Review Phase I • RTOS CONSIDERATIONS IN IMA SYSTEMS • Shared Resources and Resource Management • IMA Schedulers • Run Time Kernels • Non-partitioning Run time Operating Systems • RTOS within a partition of an IMA system • RTOS Exception Handling

13. Research Paper – Review Phase I • Integration • Installation • Configuration • Initialization • System Health Monitoring & Recovery

14. Handbook Review of Phase II • Handbook Considerations • AC 20-145: Guidance for Integrated Modular Avionics (IMA) that Implement TSO-C153 Authorized Hardware Elements • Roles in AC 20-145 are the primarily applicant and FAA. • AC 20-148: Guidance for Reusable Component Developers • SC-200 - Draft Consensus • IMA Experience – Vendor Interviews • Published Works

15. Handbook Review of Phase II • Handbook • Handbook “checklists” or “worksheets” requested • Ensure Completeness • Not advocates of checklists or worksheets. • Handbook as a resource • Various Roles - develop own approaches • SC-200 requests an IMA certification plan. • IMASCP • roles defined

16. Handbook – Review Phase II • “HANDBOOK FOR COMPONENT INTEGRATION IN IMA SYSTEMS” • The Integration Process • Roles & Responsibilities • Integration Models • Set/Use, Communications, etc. • Topics of IMA RTOSs & Components

17. Handbook – Review Phase II • Topics of IMA RTOSs & Components Environmental Hardware Memory Partitions Input/Output Interrupts Shared Resources Data Communications Process Time Identification and Control Initialization Installation Error Handling

18. Review of Phase II • Handbook • Integration Changes • SC200 Roles • Certification Authority • Certification Applicant • IMA System Integrator • Platform and Module Suppliers • Application Supplier • Maintenance Organization • Handbook Roles • RTOS Developer added

19. A Peek At the Handbook • INTEGRATION PLANS • FOR COMPONENTS • FOR MODULES • FOR OVERALL SYSTEM • INTEGRATION REQUIREMENTS • INTEGRATION DESIGN • INTEGRATION VERIFICATION • Phase III

20. A Peek At the Handbook • PRODUCT CHANGE ACTIVITIES • IMA INTEGRATION PRACTICES. • Set/Use. (Traceability) • Worst Case Execution Time. • Communications. • Integration Models. • CM FOR THE INTEGRATOR • All CM Components [platform, application, rtos, etc] • CM in phases • Initial, Dev, Verification, Delivery

21. A Peek At the Handbook • Data Loader • Entire IMA, Single Partition, Single App, IMA, Electronic labeling • Health Management Systems • Monitoring • Detection • Accommodation functions • Trial integration

22. A Peek At the Handbook • IMA INTEGRATION TOOLS • Tool Classes • Traceability Tools • Modeling Tools Frameworks • Configuration Control • Data Coupling, Control Coupling

23. A Peek At the Handbook • IMA INTEGRATION TOOLS (cont.) • Design Integration Environment Tools • Modeling Tools • Temporal • Communication • Distributed Target

24. A Peek At the Handbook • DOWNSIDES TO CONDSIDER • SSA OF FEDERATED VS. IMA • FINGER POINTING • WCET • VERIFICATION PITFALLS • REUSE PITFALLS • SECURITY

25. Next Phase of Research • Year 2 • Handbook: Integration Considerations in IMA systems – Draft 9/26/05 • Year 3 • Report: Verification Considerations in IMA systems – Draft 7/26/06 • Contributions From Attendees Welcome • james.krodel@pw.utc.com

26. james.krodel@pw.utc.com